1. 'Cheers'

When you think about it, the characters on Cheers all had pretty sad lives. Norm hated his wife and job, Cliff was a lonely mailman, Sam's baseball glory days were long behind him and Carla was raising a bunch of kids on what was surely a pretty tiny salary. But the beauty of the show was that these people all had each other. They became an unlikely family unit, even if they came from wildly different walks of life and had little in common. The show ran for an incredible 11 seasons, and then Kelsey Grammer played Frasier for another 11 seasons on a hugely successful spin-off.